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護(hù)坡樁在工程中的應(yīng)用
- 來源：http://www.linshy.com/ 日期：2023-04-04 發(fā)布人：admin
護(hù)坡樁在工程中的應(yīng)用是怎樣的呢？實(shí)際上山東護(hù)坡樁在進(jìn)行時(shí)，放線用測量儀器準(zhǔn)確定軸線和樁位位置，護(hù)坡樁施工過程中，確定樁底、樁頂標(biāo)高，施工時(shí)比樁頂高30～50cm。采用深層護(hù)坡樁層護(hù)坡樁機(jī)三次下沉切土，二次提升攪拌噴漿成樁的施工工藝方法。施工技術(shù)要求：
What is the application of slope protection piles in engineering? In fact, during the construction of Shandong slope protection piles, measuring instruments are used to accurately determine the axis and pile position. During the construction of slope protection piles, the elevation of the pile bottom and pile top is determined, which is 30-50cm higher than the pile top during construction. The construction process method of using a deep slope protection pile layer slope protection pile machine to sink and cut soil three times, and to lift, mix, and spray grout twice to form a pile. Construction technical requirements:
1.水泥土護(hù)坡樁：鉆孔直徑700mm，孔中心距為500mm，樁身采用PO42.5普通硅酸鹽水泥，水泥摻量為16%，水灰比采用0.5～0.55。水泥土護(hù)坡樁養(yǎng)護(hù)期不得少于28天，無側(cè)限抗壓強(qiáng)度qu>0.8Mpa時(shí)方可開挖基坑。具體施工要求按施工圖紙進(jìn)行。
1. Cement soil slope protection pile: The drilling diameter is 700mm, and the center distance between the holes is 500mm. The pile body is made of PO42.5 ordinary Portland cement, with a cement content of 16% and a water cement ratio of 0.5-0.55. The curing period of cement soil slope protection piles shall not be less than 28 days, and excavation of foundation pits can only be carried out when the unconfined compressive strength qu>0.8Mpa. The specific construction requirements shall be carried out according to the construction drawings.
2.樁體垂直度偏差不得大于0.5%L，樁位偏差不得大于50mm。
2. The verticality deviation of the pile body shall not exceed 0.5% L, and the pile position deviation shall not exceed 50mm.
3.雙軸護(hù)坡樁為坑內(nèi)土體加固，一幅樁的搭接為20cm。
3. The biaxial slope protection pile is used to reinforce the soil in the pit, and the overlap of one pile is 20cm.
4.采用兩次注漿三次攪拌工藝：攪拌頭下沉攪拌設(shè)計(jì)深度，然后提噴漿升設(shè)計(jì)標(biāo)高，重復(fù)以上工序。攪拌頭平均下沉及提升速度不得大于0.5m/min，速度必須均勻，每根樁的注漿量必須足夠。
4. Adopt two rounds of grouting and three rounds of mixing process: first, the mixing head sinks and mixes to the design depth, then lift the spray to the design elevation, and repeat the above process. The average sinking and lifting speed of the mixing head must not exceed 0.5m/min, and the speed must be uniform. The grouting amount for each pile must be sufficient.
5.水泥土護(hù)坡樁應(yīng)連續(xù)施工，不可長時(shí)間中斷，樁組之間搭接時(shí)間不得大于24小時(shí)，如超過24小時(shí)，須采取措施對其施工冷縫進(jìn)行處理（增加一根樁），搭接樁水泥的摻量為18%，在接逢外補(bǔ)樁及作出明顯標(biāo)記。
5. Cement soil slope protection piles should be constructed continuously and should not be interrupted for a long time. The overlap time between pile groups should not exceed 24 hours. If it exceeds 24 hours, measures must be taken to treat the construction cold joint (adding one pile). The cement content of the overlap pile is 18%, and piles should be added and clearly marked outside the joint.
6.水泥漿制備后應(yīng)在2小時(shí)內(nèi)用完，并防止水泥漿發(fā)生離析，拌漿桶和拌漿池內(nèi)均設(shè)置攪拌裝置。水泥要有質(zhì)量保證單，并應(yīng)取樣復(fù)試合格后方可使用，不同品種、標(biāo)號、生產(chǎn)廠家的水泥不能混用于同一根樁內(nèi)。
6. After the preparation of cement slurry, it should be used up within 2 hours to prevent segregation of the cement slurry. Mixing devices should be installed in the mixing bucket and mixing tank. Cement must have a quality assurance certificate and must be sampled and retested before use. Cement of different varieties, grades, and manufacturers cannot be mixed in the same pile.
7.應(yīng)設(shè)專人對每根樁的水泥摻量、攪拌情況和施工情況做詳細(xì)的記錄。
7. A dedicated person should be assigned to keep detailed records of the cement content, mixing situation, and construction situation of each pile.
護(hù)坡樁在工程中的應(yīng)用相關(guān)內(nèi)容就到這里了，您對此有怎樣的疑惑或者需求，就來我們網(wǎng)站http://www.linshy.com咨詢！
That's all for the application of slope protection piles in engineering. If you have any doubts or needs about this, please come to our website http://www.linshy.com consulting service
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